Cisco Systems Inc. is placing a major bet on security to revive sluggish sales of networking switches, its biggest business, as part of a multiyear effort to fend off competitors and turn around the struggling company.

Tesla Inc. on Monday said its global sales rose 53% in the second quarter, meeting its goal to deliver at least 47,000 vehicles during the first half of the year before it begins producing a new sedan.

Tesla Inc. on Friday updated its second-quarter sales report to include the number of vehicles that were in transit at the end of the period—a number that was absent in the report earlier in the week and had triggered questions from analysts.

Cohu Inc., which tests semiconductors, wants to persuade the U.S. Committee on Foreign Investment that the proposed sale of Xcerra Corp. to a Chinese government-backed fund would threaten national security.